Finding the Fourth Proportional to 3,892.78, 5,839.47 and 1,943.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,892.78 : 5,839.47 = 1,943.31 : x
2. Step 2: Convert to fraction form
   3,892.78/5,839.47 = 1,943.31/x
3. Step 3: Cross multiply
   3,892.78x = 5,839.47 × 1,943.31
4. Step 4: Simplify right side
   3,892.78x = 11,347,900.45
5. Step 5: Solve for x
   x = 11,347,900.45/3,892.78
6. Step 6: Final answer
   x = 2,915.11